Tool-stock.



IINrTi-n STATES` PATENT Trios.-

IVILLIAM G. KLEINFELDER, OF CHICAGO, ILLINOIS.

TOOL-STOCK.

SPECIFICATION forming part of Letters Patent No. 632,312, datedSeptember 5, 1899.

pplication led November 8, 1898 Serial No. 695.825. (No model.) i

.To @ZZ whom t may concern:

Be it known that I, IVILLIAM G. KLEIN- FELDER, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inTool-Stocks, of which the following is a full, clear, and exactspecification.

My invention relates more particularly to tool-stocks forplaning-machines in which the tools are held either vertically or at anoblique angle to the work by means of set-screws or other devices, itbeing the custom to employ a gang or number of such tools in each stock.

One of the objects of my invention is to provide means whereby thecross-head or stock which holds the tools may be considerably elongatedfor accommodating a -large number of tools without resulting in thataction of the tools during the cutting operation` known as chattering7 VAnother object of my invention is to provide improved means whereby thesame set of set-screws may be employed for binding in place a pluralityoftools, and a further object of my invention is to provide meanswhereby the tool-stock may be set at various angles with relation to itscarrying-head, so that the tools will not track one behind the other,but may be caused to cut into the work different distances, as desired.

IfVith these ends in View my invention consists in certain features ofnovelty in the construction, combination, and arrangement of parts bywhich the said objects and certain other objects hereinafter appearingare a*- tained, all as fully described with reference to theaccompanying drawings and more particularly pointed out in the claims.

In the said drawings, Figure l is a side elevation of a planer-head ofthe usual construction provided with my improved tool-stock.

Fig. 2 is a front View thereof looking at right angles to the view inFig. l. Fig. 3 is a plan section taken on the line 3 3, Fig. l. Fig. 4is a plan section taken on the line 4 4, Fig. l. Fig. 5 is an obliquesection taken lengthwise of the tools and longitudinally of thecrosshead of the tool-stock. Fig. 6 is a View similar to Fig. Al,illustrating my improvements as applied to a surface-planer; and Fig. 7is a plan view thereof.

l represents the planer-head, provided on one sidel with a pair offlanges 2, between which is pivoted on the pivot or bar 3 the usualswinging apron-block 4, whose outer face is provided with the ordinarygripping plates or jaws 5, against which rests the stem 6 of thetool-stock in the ordinary manner. This stem may be clamped against theroughened jaw-plates 5 by any suitable means, but preferably by theusual clamping-plates 7 and bolts 8, two of which latter are arranged011 each side of the stem 6 and pass into the planer-block 4.

The cross-head 9 of the tool-stock in the example shown is provided withslots for the accommodation of a gang consisting of four tools 10, andthese in the particular illustration are set at an oblique angle, asshown in Fig. 2. These tools l0 are held in place by one or moreset-screws ll, threaded in each end of the cross-head 9. As more clearlyshown in Fig. 5, the set-screws impinge directly against the end tools,whose cavities or slots in the cross-head are slightly larger than thewidth of the tool, so that the pressure of the screws forces the endtools against the outer ends of one or 4more (preferably two)binding-pins l 2, arranged horizontally in suitable passages between theouter and inner tools and being of sufficient length to reach and firmlyimpinge the inner edges, so that the pressure of one set of set-screwsll serves to bind in place a plurality of tools. I have shown fourtools; but it is of course obvious that any number might be employed andthe same principle of binding carried out by simply duplicating thebinding-pins l2. This elongation of the head 9 in order to accommodate alarge number of tools produces greater leverage on the stem G, andconsequently renders the end tools unstable and multiplies the vibratoryeffect known aschattering, which is of course also augmented byextending the stem 6 downwardly from the head l, and in order that thischattering effect may be prevented I provide the cross-head 9 with abrace which takes its bearing against the bottom of the apron-block 4and holds the cross-head 9 against upward vibration, such brace being ofcourse located at the end and side of the cross-head opposite thecutting edge of the tools, so that the pressure against IOO -byset-screws 16, as usual.

such cutting edges will always tend to force the brace against thebottom of the apronblock. This brace may consist of an ordinary bolt 13,having its head abutting against the bottom of the apron-block 4t andits threaded end screwed into the cross -head 9, the cross-head beingprovided on one side with a boss 14, so that the bolt 13 may notinterfere with the pins 12 and may also be as far from thecutting-points 10 of the tools as possible. The bolt 13 is held at itsadjustment by jamnut 15. Thus it will be seen that when the planer-head1 makes its return movement the brace 13, together with the apron-block1.1-, will swing outwardly, and such brace will always be in position tohold the cross-head 9 and lower end of the stem 6 against vibratorymovement. Should it be desired to elongate or lower the stem 6, thebrace 13, being adjustable, may of course be elevated until its headstrikes against the bottom of the apronblock 4C.

In Figs. 6 and 7 I have shown a tool-stock more especially adapted forholding surfaceplaning tools, which, as usual, has the crosshead 9a setoff to one side of the stem 6, and the tools 10 are arranged verticallyand held In this example of surface-planer the cutting edges of thetools 10b are arranged on the side of the head 9 next the set-screws 16,and consequently the brace 13 is located on the opposite side of thehead 9a. NVith planers of this character it is often desirable to changethe angularty of the line of the gang of cutters with reference to theline of their bodily movement across the face of the work, and in orderthat this may be done I locate between the back of the stem 6a and thejaws 5 a Wedge-shaped plate or shim 17, which is sufliciently narrow topass down between the binding-bolts 8 and is of sufficient length orvertical extent to permit of the vertical adjustment of the stem 6a. Tofacilitate in placing the plate 17, I provide the back of the stem 6with a pin 18, which passes through a corresponding hole in the plate17. It will of course be understood that plates 17 of various angles maybe kept on hand and the one which has the proper angle for theparticular work to be done will be inserted.

Having thus described myinvention, what I claim as new therein, anddesire to secure by Letters Patent, is

1. The combination of a tool-stock for planing-machines, the planer-headto which said stock is pivotally secured and a brace between said stockand head for preventing vibration of the stock, substantially as setforth.

2. The combination of a planer-head, a toolstock pivotally and adjustably mounted thereon and a brace adjustable with relation to saidhead and having abutment against said tool-stock and against its pivotalsupport,sub stantially as set forth.

3. The combination of a planer-head, an apron-block pivoted therein, atool-stock secured to said planer and a brace secured to to said stockand abutting against said apronblock, substantially as set forth.

4. The combination of a planerhead,an apron-block pivoted therein, atool-stock adjustably secured to said apron-block and an adjustablebrace abutting against said toolstock and apron-block for preventingvibration of the stock, substantially as set forth.

5. The combination of a planer-head, a toolstock carried thereby and abrace impinging said tool-stock on the side opposite or remote from theside on which the cutting edges of the tools are located, for holdingsaid toolstock against vibration, substantially as set forth.

6. The combination of aplaner-head, a toolstock having ai stem and across-head, said stem being adj ustably secured to said planerhead andsaid cross-head being provided with means for holding the tools, and anadjustable brace between one end of said cross-head and the planer-head,substantially as set forth.

7. The combination of a planer-head, an apron-block pivoted therein, atool-stock consisting of a stem and a cross-head, means for adj ustablyclamping said stem to said apronblock and a bolt threaded in saidcross-head and abutting against said apron-block and serving as a bracefor holding said cross-head against vibration, substantially as setforth.

8. The combination of a tool-stock having a number of slots or passagesfor the tools, the tools located therein, pins passing between saidtools and abutting thereagainst, and means for forcing the end toolstoward said pins whereby the pins Will be caused to grip or bind theinner tool, substantially as set forth.

9. The combination of a tool-stock having slot-s or passages for thetools, the tools in said slots or passages, pins located between saidtools and being of greater length than the distance between the adjacentwalls of said slots or passages, and set-screws threaded in said stockand impinging against the outer tool, substantially as set forth.

10.. The combination of the apron-block having the gripping-jaws 5, theclamps 7 and bolts 8, the tool-stock having a stem adapted IOO to beclamped by said plates and bolts and a Wedge-shaped plate 17 locatedbetween said stem and jaws 5 and being vertically elongated,substantially as set forth.

WILLIAM G. KLEINFELDER.

lVitnesses:

EDNA B. JOHNSON, i F. A. HOPKINS.

IZO

